Published 4 issues per year
ISSN Print: 1093-3611
ISSN Online: 1940-4360
Indexed in
INFLUENCE OF ARC INSTABILITIES ON THE INJECTION IN SUSPENSION PLASMA SPRAYING
ABSTRACT
Recent works have shown that Suspension Plasma Spraying (SPS) allows depositing Yttria Stabilized Zirconia (YSZ) dense coatings for Solid Oxide Fuel Cells provided that the powder size distribution and plasma parameters are carefully adapted. This paper presents a further analysis of important SPS parameters which leads to control the interaction plasma jet-suspension. A particular attention is paid to the treatment of liquid materials mechanically injected (suspension jet or drops) according to different working parameters such as the plasma mixture and the injection pressure. Concerning the suspension injection, by observing the suspension drops injection with a fast shutter camera triggered by a defined voltage level of the plasma torch, it is shown that plasma jet fluctuations have a strong influence on drops fragmentation.
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Rat V, Coudert J F, Acoustic signature analysis of the interaction between a dc plasma jet and a suspension liquid jet, Journal of Physics D: Applied Physics, 42, 19, 2009. Crossref
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Tingaud O., Bacciochini A., Montavon G., Denoirjean A., Fauchais P., Suspension DC plasma spraying of thick finely-structured ceramic coatings: Process manufacturing mechanisms, Surface and Coatings Technology, 203, 15, 2009. Crossref
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Wu Chengkang, Pan Wenxia, Unsteadiness in non-transferred dc arc plasma generators, Theoretical and Applied Mechanics Letters, 1, 2, 2011. Crossref